How FICA tax is worked out
FICA — the Federal Insurance Contributions Act — is the payroll tax that funds Social Security and Medicare, and it is taken out of every paycheck. It has two parts. Social Security is 6.2% of your wages, but only up to the 2026 wage base of $184,500, so the most Social Security tax you can pay as an employee is $11,439.00. Medicare is 1.45% of all your wages with no cap at all. On top of those, the additional Medicare tax is 0.9% on wages above $200,000 for single filers and $250,000 for married filing jointly — employee only, with no employer match. Your employer pays the same Social Security and Medicare as you do, so the combined FICA is twice your share (plus the additional tax, which only you pay). FICA is separate from federal income tax, and this calculator does not estimate income tax.
At the defaults — $80,000 of wages, filing single — Social Security is 6.2% of $80,000 = $4,960.00. Medicare is 1.45% of $80,000 = $1,160.00. The additional Medicare tax is $0.00, because $80,000 is below the $200,000 threshold. The employee total is $4,960.00 + $1,160.00 + $0.00 = $6,120.00, an effective rate of 7.65%. The employer pays the same $4,960.00 + $1,160.00 = $6,120.00. The combined FICA is $12,240.00, and the take-home after FICA is $80,000 − $6,120.00 = $73,880.00.
| Tax | Rate | Applies to | Maximum |
|---|
| Social Security | 6.2% | On wages up to $184,500 | $11,439.00 max |
| Medicare | 1.45% | On all wages, no cap | No maximum |
| Additional Medicare | 0.9% | On wages above $200,000 (single) / $250,000 (MFJ) | Employee only |
| Case | Social Security | Medicare | Additional | Employee total | Take-home |
|---|
| Default ($80,000, single) | $4,960.00 | $1,160.00 | $0.00 | $6,120.00 | $73,880.00 |
| Wages $200,000 | $11,439.00 | $2,900.00 | $0.00 | $14,339.00 | $185,661.00 |
| Wages $250,000 | $11,439.00 | $3,625.00 | $450.00 | $15,514.00 | $234,486.00 |
| Wages $184,500 | $11,439.00 | $2,675.25 | $0.00 | $14,114.25 | $170,385.75 |
| Wages $185,000 | $11,439.00 | $2,682.50 | $0.00 | $14,121.50 | $170,878.50 |
| Wages $50,000 | $3,100.00 | $725.00 | $0.00 | $3,825.00 | $46,175.00 |
| Wages $120,000 | $7,440.00 | $1,740.00 | $0.00 | $9,180.00 | $110,820.00 |
| Wages $300,000 MFJ | $11,439.00 | $4,350.00 | $450.00 | $16,239.00 | $283,761.00 |
| Wages $250,000 MFJ | $11,439.00 | $3,625.00 | $0.00 | $15,064.00 | $234,936.00 |
| Wages $1,000,000 | $11,439.00 | $14,500.00 | $7,200.00 | $33,139.00 | $966,861.00 |
The worked example, line by line
Setup: gross wages $80,000, filing status single.
Line 1 — Social Security. 6.2% of $80,000 = $4,960.00. The wages are below the $184,500 wage base, so the whole $80,000 is taxed.
Line 2 — Medicare. 1.45% of $80,000 = $1,160.00. Medicare has no cap, so the whole $80,000 is taxed.
Line 3 — additional Medicare. $80,000 is below the $200,000 single threshold, so the additional tax is $0.00.
Line 4 — the employee total. $4,960.00 + $1,160.00 + $0.00 = $6,120.00.
Line 5 — the effective rate. $6,120.00 ÷ $80,000 = 7.65%.
Line 6 — the employer share. $4,960.00 + $1,160.00 = $6,120.00. The employer does not pay the additional tax.
Line 7 — the combined FICA. $6,120.00 + $6,120.00 = $12,240.00.
Line 8 — the take-home after FICA. $80,000 − $6,120.00 = $73,880.00.
Reverse: Social Security tax hits the cap at $184,500 of wages (SS = $11,439.00); $130,718.95 of wages pays exactly $10,000 of employee FICA (exact 130718.9542 — 7.65% of $130,718.95 is $9,999.9997, which displays as $10,000.00); $228,127.66 of wages pays exactly $15,000 of employee FICA (exact 228127.6596 — $9,639.00 + 2.35% of $228,127.66 is $15,000.0000); $108,283.70 of wages leaves exactly $100,000 of take-home after FICA (exact 108283.7033 — 92.35% of $108,283.70 is $99,999.9970, which displays as $100,000.00).
Every branch, checked
Wages $200,000: Social Security is 6.2% of $184,500 = $11,439.00, because the wages are above the wage base. Medicare is 1.45% of $200,000 = $2,900.00. The additional Medicare tax is $0.00 — $200,000 is at the threshold, not above it. The employee total is $14,339.00, the employer pays the same $14,339.00, the combined FICA is $28,678.00 and the take-home is $185,661.00.
Wages $250,000: Social Security is capped at $11,439.00. Medicare is 1.45% of $250,000 = $3,625.00. The additional Medicare tax is 0.9% of the $50,000 above the $200,000 threshold = $450.00. The employee total is $15,514.00, the employer pays $15,064.00 — the $450.00 gap is the additional tax, which the employer never pays — the combined FICA is $30,578.00 and the take-home is $234,486.00.
Wages $184,500: Social Security is 6.2% of $184,500 = $11,439.00, exactly at the cap. Medicare is 1.45% of $184,500 = $2,675.25. The employee total is $14,114.25, the employer pays the same $14,114.25, the combined FICA is $28,228.50 and the take-home is $170,385.75.
Wages $185,000: Social Security is still $11,439.00 — the extra $500 of wages adds $0 of Social Security tax, because the wage base is $184,500. Medicare is 1.45% of $185,000 = $2,682.50. The employee total is $14,121.50, the combined FICA is $28,243.00 and the take-home is $170,878.50. The $500 raise is worth $492.75 after FICA, not $500.
Wages $50,000: Social Security is 6.2% of $50,000 = $3,100.00. Medicare is 1.45% of $50,000 = $725.00. The employee total is $3,825.00, the employer pays the same $3,825.00, the combined FICA is $7,650.00 and the take-home is $46,175.00. Below the wage base, every dollar of wages costs 7.65 cents of employee FICA.
Wages $120,000: Social Security is 6.2% of $120,000 = $7,440.00. Medicare is 1.45% of $120,000 = $1,740.00. The employee total is $9,180.00, the employer pays the same $9,180.00, the combined FICA is $18,360.00 and the take-home is $110,820.00.
Wages $300,000 MFJ: Social Security is capped at $11,439.00. Medicare is 1.45% of $300,000 = $4,350.00. The additional Medicare tax is 0.9% of the $50,000 above the $250,000 MFJ threshold = $450.00. The employee total is $16,239.00, the employer pays $15,789.00, the combined FICA is $32,028.00 and the take-home is $283,761.00.
Wages $250,000 MFJ: Social Security is capped at $11,439.00. Medicare is 1.45% of $250,000 = $3,625.00. The additional Medicare tax is $0.00 — $250,000 is at the MFJ threshold, not above it. The employee total is $15,064.00, the employer pays the same $15,064.00, the combined FICA is $30,128.00 and the take-home is $234,936.00. The same $250,000 as a single filer would owe $450.00 more.
Wages $1,000,000: Social Security is capped at $11,439.00. Medicare is 1.45% of $1,000,000 = $14,500.00. The additional Medicare tax is 0.9% of the $800,000 above the $200,000 threshold = $7,200.00. The employee total is $33,139.00, the employer pays $25,939.00, the combined FICA is $59,078.00 and the take-home is $966,861.00. The effective rate falls to 3.31%, because the Social Security cap stops growing while the wages keep going.
Reverse — the other way round: Social Security tax hits the cap at $184,500 of wages; $130,718.95 of wages pays exactly $10,000 of employee FICA; $228,127.66 of wages pays exactly $15,000 of employee FICA; $108,283.70 of wages leaves exactly $100,000 of take-home after FICA.
What the defaults assume
The model assumes the 2026 figures: a $184,500 Social Security wage base, 6.2% Social Security, 1.45% Medicare, and the 0.9% additional Medicare tax above $200,000 single / $250,000 MFJ. It assumes the wages you enter are your gross annual wages before any tax or deductions, and the filing status you pick is right — check it, because the additional tax threshold is $200,000 for single and $250,000 for married filing jointly, and it is NOT indexed for inflation. It assumes you are an employee: a self-employed worker pays both halves (12.4% Social Security + 2.9% Medicare) via SECA, so read the combined FICA figure as your tax. It leaves out federal income tax, state tax and any other deductions entirely. Rounding convention: money is rounded to cents, the reverse wages are nearest-cent solutions with the exact value to four decimals, and all figures are computed from unrounded values, rounded only for display.
Output · formula · meaning
| Output | Formula | What it means |
| Social Security (employee) | 6.2% × wages up to the $184,500 wage base | $4,960.00. |
| Medicare (employee) | 1.45% × all wages, no cap | $1,160.00. |
| Additional Medicare (employee) | 0.9% × wages above $200,000 single / $250,000 MFJ | $0.00. |
| Employee FICA total | Social Security + Medicare + additional Medicare | $6,120.00. |
| Employer FICA | Social Security + Medicare (no additional tax) | $6,120.00. |
| Combined FICA | employee + employer | $12,240.00. |
| Take-home after FICA | wages − employee FICA | $73,880.00. |
| Employee effective rate | employee FICA ÷ wages | 7.65%. |
| Wage where Social Security hits the cap | the 2026 wage base itself | $184,500.00 (SS = $11,439.00). |
| Wage for exactly $10,000 employee FICA | $10,000 ÷ 7.65% (below the cap) | $130,718.95 (exact 130718.9542). |
| Wage for exactly $15,000 employee FICA | $9,639.00 + 2.35% × wages = $15,000 (above the cap) | $228,127.66 (exact 228127.6596). |
| Wage for exactly $100,000 take-home | $100,000 ÷ 92.35% (below the cap) | $108,283.70 (exact 108283.7033). |
| Wages $200,000 | same model, $200,000 wages | SS $11,439.00, Medicare $2,900.00, additional $0.00, employee $14,339.00, employer $14,339.00, combined $28,678.00, take-home $185,661.00, effective 7.17%. |
| Wages $250,000 | same model, $250,000 wages | SS $11,439.00, Medicare $3,625.00, additional $450.00, employee $15,514.00, employer $15,064.00, combined $30,578.00, take-home $234,486.00, effective 6.21%. |
| Wages $184,500 | same model, $184,500 wages | SS $11,439.00, Medicare $2,675.25, additional $0.00, employee $14,114.25, employer $14,114.25, combined $28,228.50, take-home $170,385.75, effective 7.65%. |
| Wages $185,000 | same model, $185,000 wages | SS $11,439.00, Medicare $2,682.50, additional $0.00, employee $14,121.50, employer $14,121.50, combined $28,243.00, take-home $170,878.50, effective 7.63%. |
| Wages $50,000 | same model, $50,000 wages | SS $3,100.00, Medicare $725.00, additional $0.00, employee $3,825.00, employer $3,825.00, combined $7,650.00, take-home $46,175.00, effective 7.65%. |
| Wages $120,000 | same model, $120,000 wages | SS $7,440.00, Medicare $1,740.00, additional $0.00, employee $9,180.00, employer $9,180.00, combined $18,360.00, take-home $110,820.00, effective 7.65%. |
| Wages $300,000 MFJ | same model, $300,000 wages, MFJ | SS $11,439.00, Medicare $4,350.00, additional $450.00, employee $16,239.00, employer $15,789.00, combined $32,028.00, take-home $283,761.00, effective 5.41%. |
| Wages $250,000 MFJ | same model, $250,000 wages, MFJ | SS $11,439.00, Medicare $3,625.00, additional $0.00, employee $15,064.00, employer $15,064.00, combined $30,128.00, take-home $234,936.00, effective 6.03%. |
| Wages $1,000,000 | same model, $1,000,000 wages | SS $11,439.00, Medicare $14,500.00, additional $7,200.00, employee $33,139.00, employer $25,939.00, combined $59,078.00, take-home $966,861.00, effective 3.31%. |
Who uses this
- The employee checking a pay raise: they learn $80,000 of wages costs $6,120.00 of employee FICA — so they know the raise is worth 92.35 cents on the dollar after FICA, and they check the $130,718.95 figure before asking what $10,000 of FICA buys.
- The high earner crossing the wage base: they learn $185,000 of wages still pays only $11,439.00 of Social Security — so they know the extra $500 adds $0 of Social Security tax, and they check the $200,000 case at $14,339.00 before the additional tax starts.
- The couple filing jointly: they learn $250,000 MFJ owes $0.00 of additional Medicare tax — so they know the $250,000 threshold is theirs, and they check the $300,000 MFJ case at $450.00 before assuming the same $200,000 threshold applies.
- The self-employed worker pricing a job: they learn the combined FICA on $80,000 is $12,240.00 — so they know the real cost of paying themselves, and they check the $1,000,000 case at $59,078.00 before quoting a rate.
Accuracy & limitations
The math is exact for the numbers you enter: Social Security is 6.2% of wages up to the $184,500 wage base, Medicare is 1.45% of all wages, and the additional Medicare tax is 0.9% of wages above the $200,000 / $250,000 threshold, employee only. What the model cannot do is know your pay: check the wages, because a bonus, overtime or a second job all count toward the wage base and the threshold, and a bonus that pushes you over $200,000 starts the additional tax on the part above it. It assumes the 2026 rates and leaves out federal income tax, state tax and any other deductions — the take-home after FICA is $73,880.00 at the defaults, and the take-home after everything is less. For the paycheck after all tax and deductions, see take-home pay calculator; for the wage base itself, see 2026 Social Security wage base.
Cite this calculatorBright Side Kit. “FICA Tax Calculator: Social Security & Medicare 2026.” brightoolbox.com, 2026. Method: Social Security = 6.2% × wages up to the $184,500 wage base (max $11,439.00); Medicare = 1.45% × all wages, no cap; additional Medicare = 0.9% × wages above $200,000 single / $250,000 MFJ, employee only; employee FICA = Social Security + Medicare + additional; employer FICA = Social Security + Medicare; combined = employee + employer; take-home = wages − employee FICA; effective rate = employee FICA ÷ wages. Defaults: $80,000 wages, single → SS $4,960.00, Medicare $1,160.00, additional $0.00, employee $6,120.00, employer $6,120.00, combined $12,240.00, take-home $73,880.00, effective 7.65%. Branches: $200,000 → SS $11,439.00, Medicare $2,900.00, additional $0.00, employee $14,339.00, take-home $185,661.00; $250,000 → SS $11,439.00, Medicare $3,625.00, additional $450.00, employee $15,514.00, take-home $234,486.00; $184,500 → SS $11,439.00, Medicare $2,675.25, employee $14,114.25, take-home $170,385.75; $185,000 → SS $11,439.00, Medicare $2,682.50, employee $14,121.50, take-home $170,878.50; $50,000 → SS $3,100.00, Medicare $725.00, employee $3,825.00, take-home $46,175.00; $120,000 → SS $7,440.00, Medicare $1,740.00, employee $9,180.00, take-home $110,820.00; $300,000 MFJ → SS $11,439.00, Medicare $4,350.00, additional $450.00, employee $16,239.00, take-home $283,761.00; $250,000 MFJ → SS $11,439.00, Medicare $3,625.00, additional $0.00, employee $15,064.00, take-home $234,936.00; $1,000,000 → SS $11,439.00, Medicare $14,500.00, additional $7,200.00, employee $33,139.00, take-home $966,861.00. Reverses: SS hits the cap → $184,500 of wages; exactly $10,000 employee FICA → $130,718.95 (exact 130718.9542); exactly $15,000 employee FICA → $228,127.66 (exact 228127.6596); exactly $100,000 take-home → $108,283.70 (exact 108283.7033). Bright Side Kit. "FICA Tax Calculator: Social Security & Medicare 2026." https://brightoolbox.com/fica-tax-calculator/ Accessed October 25, 2026.
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